1. Unit of Obstetrics and Gynecology, Department of Biomedical and Clinical Sciences, “L. Sacco” University Hospital, Università degli Studi di Milano, Milan, Italy
2. Unit of Oral Pathology, Department of Dentistry, University Vita-Salute San Raffaele and IRCCS San Raffaele University Hospital, Milan, Italy
3. Humanitas Clinical and Research Center, Rozzano, Italy
4. Laboratory of Analysis, Humanitas Clinical and Research Center, Rozzano, Italy